Question about 2000 Ford F250 Super Duty Crew Cabs

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Heater blows cold whenever truck is on idle. - 2000 Ford F250 Super Duty Crew Cabs

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If you have a gas engine truck (4.6L, 5.4L, or 6.8L) the heater core is most likely stopped up. This occurs because of lack of service to the cooling system or services performed without using distilled water in the coolant mix. Minerals dissolved in tap water will deposit on the inside of the heater core (and your radiator) plugging the narrow passages that exchange heat from the coolant to the air passing over the core. Check coolant flow through the heater core. If unable or unsure of how to do this yourself, take the vehicle to a Ford dealer for repair.

Posted on Feb 06, 2010

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Check fluid level must be low on coolant or air in system.

Posted on Feb 02, 2010

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SOURCE: Heater wont work in my 1990 Chevy Truck

Several things can cause this (1) low coolant (2) bad coolant valve to heater core.(3) bad damper in duct.

Posted on Dec 27, 2008

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SOURCE: Heater blows cold air when idle

Sounds like you may have a partially plugged heater core. You could flush this out separately, from flushing radiator & engine block. Diconnect heater hoses going to your heater core and clamp off, so not to loose coolant from engine. Now hook up separate hose to one side of heater core pipe and flush out with typical garden hose. Repeat procedure on both heater core inlets. Reconnect original heater hoses and test difference. You may have to add an additional litre of antifreeze. If this don't work i suggest changing heater core. Good luck.........Ron.

Posted on Jan 03, 2009

  • 1 Answer

SOURCE: Heater blows cold air unless accelerating

See my posted question under 2001 Mercury Villager: "HEAT BLOWS COLD WHEN CAR IS IDLING" I got an answer from chuck943 about air pockets and it was very helpful.

Posted on Feb 25, 2009

  • 3 Answers

SOURCE: blowing cold air

I had the same problem that I just fix by flushing the heater core out with a hose.   take the two hoses off the fire wall and put the water to it and let flush.  my heater is putting out 150 dg. F  of hot air.   I'm so excited!  i will stay warm now.

Posted on Feb 27, 2009

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SOURCE: Truck overheat after thermostat was replaced. Blows cold heat too

Have you checked the coolant to make sure its full.Try this.Run the truck with the radiator cap off and let it warm up.When it reaches normal temps sqeeze the rubber hoses.These hose should be a little hard to squeeze.If they are the thermo and water pump are fine.

Posted on Apr 28, 2009

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Blows cold air turn heat on


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Jan 28, 2016 | 2005 Hyundai Tucson

2 Answers

Heater temp on high only bows luke warm air after driving. A/C works just fine.Plenty of cold air from it


heater blows cold air idle chrysler 300 Questions & Answers ...

www.fixya.com > Forum > Tags
Find solutions to your heater blows cold air idle chrysler 300 question. ... blow warmair for a few mins then back to luke warm. i replaced thermostat ... HEAT BLOWSCOLD AIR WHEN IDLING ONLY GETS HOT WHEN START DRIVING ... About 15 minutes after driving the diver side vents start blowing straight cold air but the ...

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Nov 3, 2011 - When I press the gas, the air from the vents is nice and hot. .... So am Idriving a car with a ton of problems, or could the power steering ... Just anotherquestion, when warmed up does the engine temperature ... When the heater is on and I'm not pressing the gas pedal, luke warm air blows from the vents.

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RedditFeb 12, 2014 - Heater blows cool air when stopped and warm air while driving 2008 Kia Spectra (self. ... just fine but appears to blow cool air when I was stopped at a stoplight. ... My temp gauge would also be pegged high when at idle / low RPM. ...thermostat only blocks coolant going to the radiator, and the heater core, ...Missing: 300m ‎luke

Why is My Car AC Blowing Hot Air? - BlueDevil Products

gobdp.com/blog/car-ac-blowing-hot-air/

Jan 27, 2016 | 2000 Chrysler 300M

1 Answer

There is no heat from heater at engine idle speed.


I have to believe that your thermostat is still sticking....replace it and you problem should go away. Relatively inexpensive fix.

Jan 23, 2013 | Cars & Trucks

1 Answer

The heater in my 1999 Land Rover Discovery Series 1 won't blow cold.


As per your problem mentioned.There are few solved help links to troubleshoot these problems.Go through the list and Click the link below:----
Air conditioner blows air but not cold air http://repairhelpcenter.blogspot.in/2012/07/air-conditioner-blows-air-but-not-cold.html

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Car overheats and Air blows hot at idle? http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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Heater blows cold? http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html---------- Hot air on the driver's side vents only? http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

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2005 Chrysler PT Cruiser: A/C Blows Warm? http://whoisbyme.blogspot.in/2012/06/2005-chrysler-pt-cruiser-ac-blows-warm.html

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1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold? http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

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No heat, blower blows only cold? http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

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These will help.
Thanks.

Nov 22, 2012 | Cars & Trucks

1 Answer

Heater blows cold air at idle


It sounds like your heater valve may be sticking. Try watching the valve, which is located behind the engine (two tubes etc
if you need a VAG diagnostic tool you can click here: VAG diagnostic tool

Nov 09, 2012 | Cars & Trucks

1 Answer

Overheating


To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

------
Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.

Jan 30, 2012 | 2003 Chrysler PT Cruiser

3 Answers

2002 Dodge Ram 1500 - The heater blows cold air when it sits at idle but blows warm air when it is being driven down the road. A/C does the opposite, doesn't blow cold air when diling, but I figured this...


the heater blowing cold at an Idle and warm while driving it,is usually low coolant in the radiator,remove the radiator cap when engine is cold,fill to the top,and fill overflow tank to full,if that doesn't take care of it,check the heater hoses at an idle and see if they are both the same temp,it might be a water pump not doing its job.

Jan 11, 2010 | 2001 Dodge Ram 1500 Truck 2WD

2 Answers

2006 mustang heater blows cold when idling


make sure you have the right thermostat installed

Dec 17, 2009 | 2006 Ford Mustang

2 Answers

Blowing cold air when idling


temp should rise while idling unless thermostat is stuck open and not letting heat build up

Nov 11, 2009 | 2006 Chevrolet Impala

2 Answers

2006 chvy impala when idling dont blow hot air


1 Inspect Cooling System Mix Coolant level low or flow is restricted. grey_line.gif 2 Inspect Thermostat Thermostat stuck closed grey_line.gif 3 Inspect Heater Control Valve Leaking or defective heater control valve. here something to help u

Here to help Shaun

Nov 23, 2008 | 2000 Chevrolet Impala

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